Modern Vespa

Hi all.

Ive just ordered a malossi 70cc cylinder kit, bigger manifold, dellorto 17.5mm carb, malossi E5 racing air filter & kevlar belt. Already got the multivar but will play around with various roller weights.

My question is, do you think the scoot will really benefit if I upgrade the exhaust too? Currently it has a giannelli 'go' exhaust....but am wondering if it really is worth the money to change to a sito plus or leo vince sp3 exhaust??

Also I'm pretty sure I need a new fuel tap...as it is leaking/dripping down onto the exhaust.

Where can I get a new fuel tap for my et2?

I found them in stock at Scooter parts direct. Are you premixing in the gas tank?

Good luck!

ooh buy a new exhaust. You know you want one!

If you decide on a Leo Vince...I have a gift certificate for $150 towards the purchase of exhaust. Make me an offer on it!

From what I understand, the Sito + is made by Leo Vince.

The only catch is that the certificate expires on the 23rd.

Everybody needs a pipe, without one your genitalia will whither and die, you will be jobless, your parents will spit on you in the street, Jerry Springer will deem you too outlandish to appear on his show, your ex girlfriend will publish her secret pictures of you, Fuel stations will refuse to serve you, you will become a vagrant and we will all laugh at you too.

judging by the previous post, you had better buy the pipe.

ahahaa umm, not really the responses i was expecting!

i would definately buy a new pipe if the stock one was still on there....but i just dont know how much different the sp3 will be compared to the giannelli go. it seems like a fair bit of extra $ for perhaps a minimal gain in performance compared to the rest of the upgrade gear which cost less than a new exhaust.
ive done a little research into exhausts and the giannelli go is prob middle of the range for their pipes....

ok yes. i would like a new pipe. there. ive said it. wouldnt everyone like a new pipe & brand spanking new air filter each time they ride?
but i'd be bitterly disappointed if i forked out for a fancy new pipe that didnt improve the performance.

i think the smartest thing to do is wait until ive fitted the kit and go from there.... on one wheel

and no im not premixing in the tank but ive been reading that the fuel tap on the et's has been a problem for quite a few people so i think i will start to premix too when i fit everything up.

thank you for the random confusing responses

1) yes you want an exhaust. If you get the right exhaust for the kit you bought you can get a SERIOUS boost in power. With a 'mid-race' kit you can double the power output adding the exhaust. My MHR Replica kit did 'ok' until I got the proper pipe for it.

http://www.youtube.com/watch?v=rbGOK3pp_Rk

2) Which malossi kit did you get? If you got the 'sport' kit, stick with a Leo Vince or Tecnigas RS/Next R pipe. That cylinder is tuned for about 9,000 rpm and so are those exhausts, although the RS can work with a higher rpm cyl also. If you got the MHR Replica cyl, you need a higher rpm pipe (11,000 or so) like Yasuni C16 or Tecnigas None. If you dont get the right pipe for the cyl, then you wont see the performance gain you expect.

BTW, here is how the tuned pipe works:

The wave you see going back into the cyl acts sort of like a supercharger. you suck extra mix into the pipe, then the pressure wave shoves it back in. I kid you not, it works.

Also, Pre-mix is the only way to go. Dont trust your expensive cyl kit to a cheap oil pump.

thanks monza.

i got the malossi cast iron (47mm bore, 9.5 - 10.7rpm's) 68cc cylinder kit.
i guess i'll see how it goes with the giannelli 'go' pipe.....and if it doesnt 'go', then i'll look into the sp3 or technigas pipes.

cheers for the informative post 8)

and yeh i will premix once it is all fitted up.

cant wait for it all to arrive. its on the way.....from germany 8)

A propper expansion chamber will wake up a two stroke but there are several issues to consider. I believe on the ET2 that the silencer will often run into trouble with the bodywork on the right side. As you know it does on the Yesterday as well. Same problem with the ET2. I'm sure cutting the body up a bit could solve the problem, but something to consider. Also, it will be much louder and fuel economy will drop. I'm rarely concerned on the later but overall a performance exhaust isn't always a good thing. And one last thing, none of the pipes the original poster referred to are true expansion chambers.

hmmm interesting BGK. im guessing that my giannelli go is not a true expansion chamber pipe either.

and im not concerned about the fuel economy & noise of the mods so much, i do realise the compromise of making a go-fast-50 8)

what would you recommend then? have you modded your et2, if so share what youve done

thank you. that was very helpful!!

I'd first get a set of spare lower plastic bodywork to make sure you can always feel free when cutting up the lower edge. You have the lowest end of the malossi spectrum but more cubes is more cubes. Search ebay stores for malossi piaggio and there is an MHR replica pipe that should do fine for a decent price. There will likely be a few restrictions in the performance exhaust as it's labled as the model for EU road homologation. But once those get taken out you should be in business. Something like a tecnigas RS or the like would be ok as well. But I'm not sure how much room you need for the specific pipes. I just picked up my et2 tonight and haven't started in on it yet but have tuned a variety of 50cc scoots. Make sure to get a good variety of weights, springs and jets to get it right.

Some pipes clear the body, some dont. On the ET2, Im not sure which ones clear without mods. On my scoot the only pipe that fit without mods was the Tecnigas none.

BTW, that Leo SP3 pipe is not an expansion, but is rather a "road" pipe for stock cyl. I dont think you will see any more performance from it compared to the Gianelli pipe you have. Here is the information from SIP on it:

http://www.sip-scootershop.com/pages/details.php?ID=18641&SID=d7bcdca34df0307da290bd8098f4df6d

*note they list it as a pipe for 8,500 rpm.

Like BGK mentioned, anything with sound deadening material in it isnt a real expansion, even some that look like it. some pipes that look like expansions have an asphalt based material on the inside of the chamber, and a baffle in the middle. This totally negates the effect you are going for.

The Tecnigas RS is a 9,500 rpm pipe without materials in the expansion. It will be louder than an SP3, but will most definitely give more kick. Dont base pipe selection on price alone. If the pipe you need is more than you want to spend, then wait until you got the coin to buy it. That is what I did, and it was worth the wait.

As far as fuel econ...I get 35-40mpg with mine. I have a Malossi MHR Rep aluminum kit, Tecnigas None, Dell 19mm, and Overrange. It'll do 65mph, and will out accelerate every Stella, Chetak, and (non-modded) P200 I ride with. My Bv200 hasnt a chance against it in the 0-60. The price I pay though it that it is LOUD, and gets shit for MPG. Thats why I have a (90mpg) Chetak for a daily ride

ok so seems as though i will get better performance with a new pipe. the tecnigas one without the restrictions seems the best suited because it is cheaper. the mhr one is just too much $. actually any pipe posted over here is big $

im not too concerned with the noise or fuel economy.....i still use the car too, so the scoot is my little project for our upcoming summer.
and good idea, i will source a rhs lower plastic body panel to use if i need to cut into it to make room for a new pipe.

anyone know of any super deals on a tecnigas pipe for an et2 preferably in australia??

theyre not bad those tecnigas pipes, i had one on my old kitted aprilia habana 50 (suzuki morini engine).

i had the *tecnigas next R* chome one. the only problem i had was the metal badge falling off

i never got a chance to run my 70 kit with a standard pipe fitted.

my oil pump failed and it siezed which destroyed the whole engine from the inside out.

it destroyed the barrel and piston, the brand new race crank snapped,the bearings were a messand there was bits and pieces of the bearings all over the place, it was a right mess.

i was WOT accellerating hard at the time.

my tecnigas pipe DIDNT clear the body panel. i had to get the exhaust cut and re-welded then a new hanging bracket made. then i got it re-chromed.

you might see if you can get Yasuni there in Australia. All the euro tuners just love the Yasuni. I wish I could get it easier here in the US. I will probably try one out from SIP next year...

BTW, for some real heavy tuning talk, this messageboard is full of the hardcore Dutch tuners (all in english):

http://forum.scooterforum.net/forum/f94/

This is where I have learned ALOT.

thanks for the link monza. those guys are right into tuning 50cc's!!

just rode down to my local scoot workshop (via the beach ) and spoke to one of the guys who has done similar mods to what i want to do and he has a giannelli race exhaust. he thinks i'll lose low down power if i change the pipe, and actually recommends leaving the giannelli 'go' on there.

but im getting tired of predicting performance output....i need to wait until the goodies arrive and its all working good and ive run it in for a good couple hundred k's then see how it is.

the scoots got a different variator (most probably malossi), as when i bought the scoot i also got the stock exhaust and variator in a bag (the mods were done at a reputable vespa tuner here)
its done 12000km, so once ive opened it up i'll see if the rollers need replacing. theres a good chance the rollers are the correct weight, but can anyone suggest what weight rollers would be ideal for my new setup??
(im not totally sure its a malossi variator, so i dont even know what dimensions the rollers are)

thanks for your help guys